Wrench



(No Model.)

G. BLACK. WRENGH.

Patented sept. 17,1895.

UNTTED STATES PATENT Trice.

CHRISTIAN BLACK, OF GREEN COVE SPRINGS, FLORIDA.

WRENCH.

SPECIFICATXON forming part of Letters Patent No. 546,295, dated September 17, 1895. Application tiled May 20, 1895. Serial No. 549,971' (No model.)

To all whom, it may cori/cern,.-

Be it known that I, CHRISTIAN BLACK, a citizen of the United States, residing at Green Cove Springs, in the county of Clay and State ot' Florida, have invented certain new and useful Improvements in Vrenches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in sliding-jaw wrenches; and it has for its main object to provide such a wrench embodying an exceedingly cheap, simple, and easily-operated construction by which the sliding jaw may be adjustably fixed at various distances from the iixed jaw.

Other objects and advantages of the in vention will be fully understood from the following description and claim, when taken in connection with the annexed drawings, in which- Figure l is a side elevation, partly in section, of my improved wrench. Fig. 2 is a plan view. Fig. 3 is a transverse section taken on line yy of Fig. l. Fig-.4 isasimilar view taken on line a: of Fig. l. Fig. 5 is adetail perspective view of the arm for engaging the shank of the iixed jaw to adjustably tix the sliding jaw; and Fig. t5 is a detail perspective view, on an enlarged scale, of the dog carried by thesliding jaw.

Referring by letter to said drawings, A indicates the xed jaw of my improved Wrench, which has a shank a, provided on one of its sides with a plurality of transverse teeth b', and B indicates the sliding jaw, which is arranged on the shank of the fixed j aw, as shown. This sliding jaw is provided on its rear side with two apertured lugs c, and between these lugs is arranged the forward end of the arm C, which is pivotally connected to said lugs by a transverse pin d, as shown. The said arm C has its forward end bifurcated, as indicated by e, and in this bifurcation is ar- -ranged the coiled spring f, which surrounds the pin d and has one of its ends arranged against the rear side of the sliding jaw B and its opposite end arranged against the outer side of the arm C, so as to press the free end of said arm toward the shank a. At its free end the said arm C is provided with an enlargement g, which is toothed on its innerside, as indicated by h, to engage the teeth Z) of the shank of., and it is also provided with the lateral branches t, whereby it may be readily grasped and swung away from the shank of. to permit of the jaw B being adjusted with respect to the jaw A.

The teeth b of the shank ci and the teeth h of the arm C are beveled in one direction, as clearly shown in Fig. 1, to permit of the sliding jaw being adjusted toward the fixed jaw withoutthe necessity of moving the arm C away from the shank a.

By reason of the construction thus far described it will be observed that when it is desired to turn an article with the wrench it is simply necessary for the operator to place the jaws A B on opposite sides of such article and press the jaw B tightly against the same, when the article may be turned without danger ot' the jaw B being released. When it is desired to remove the wrench from an article,it is simply necessary for the operator to move the free end of arm C away from the shank a, when the sliding jaw maybe readily moved away from the article and the fixed jaw. When the arm C is released, it will, by virtue ofthe springf, automatically resume its position-againstthe shank a, ready to engagethe teeth thereof and hold the jaw B against movement away from the jaw A.

As better shown in Fig. l, the sliding jaw B is provided in its forward side with a recess i. This recess i has its inner walljinclined downwardly and away from the fixed jaw A, and it is designed to receive the movable dog E, which has a longitudinal, transversely-disposed slot 71: and is held in the recess rby a transverse bolt taking through the jaw B and said slot 7c, as shown. The dogE is normally pressed outward by the coiled spring Z, and it has its outer side toothed or serrated, as indicated by m, and also has its inner transverse side beveled or inclined, as indicated by fn.. By virtue of this it will be observed that when the jaws are in engagement with an article to be turned, and the wrench is turned in the direction of the arrow, (see Fig. 1,) the dog E will tend to move upwardly or toward the shank a, and will consequently be more IOC xo be turned.

Having described my invention, what I claim is- In a sliding jaw Wrench, the combination of a lxed jaw having a shank provided on one of its sides With a series of transverse teeth, a sliding jaw arranged on said shank and having apertured lugs on its rear side, the arm having one of its ends bifurcated and also having teeth on its inner side at its opposite end to engage the teeth of the shank, the bolt takingthrough and pivotally connecting the said arm to the lugs of the sliding jaw, and a coiled spring surrounding the bolt and arranged Within the bifurcation ofthe arm and having one of its ends bearing against the sliding jaw and its opposite end hearing against the outer side of the arm, substantially as specied.

In testimony whereof I affix my signature in presence of two witnesses.

CHRISTIAN BLACK. Witnesses:

THos. ROBERTS, GEO. N. BARBIN. 

